Telescoping fill neck for a waterbed mattress



FIG. 1 is a perspective view of a telescoping fill neck for a waterbed mattress, showing my new design;

FIG. 2 is a side elevational view thereof, the other side being the same as the side shown;

FIG. 3 is a top plan view, thereof;

FIG. 4 is a bottom plan view, thereof; and,

FIG. 5 is a median cross sectional view thereof, showing the telescoping fill neck in a retracted position.

The fragmentary broken line representation of a waterbed mattress in FIG. 5 is for purposes of illustration only and forms no part of the claimed design. 

The ornamental design for a telescoping fill neck for a waterbed mattress, as shown and described. 